Devanaboyina Venkata Ratnam

38 papers Journal 37Unranked 1
YearRankTypeTitle / Venue / Authors
2025 J jnl
Superposed epoch analysis of GPS ionospheric TEC and scintillations over low latitude Indian region during multiple geomagnetic storm events.
Earth Sci. Informatics
G. Venkata Ramana, Miriyala Sridhar, T. Venkateswara Rao, Devanaboyina Venkata Ratnam
2024 J jnl
Advances in GNSS Positioning and GNSS Remote Sensing.
Sensors
Yury Yasyukevich, Baocheng Zhang, Devanaboyina Venkata Ratnam
2024 J jnl
Statistical Analysis of Global and Regional Ionospheric Total Electron Content (TEC) Using Extreme Value Distributions.
IEEE Trans. Geosci. Remote. Sens.
Suneetha Emmela, Devanaboyina Venkata Ratnam, Yuichi Otsuka, Atsuki Shinbori, Takuya Sori, Michi Nishioka, Septi Perwitasari
2024 J jnl
The Influences of Indian Monsoon Phases on Aerosol Distribution and Composition over India.
Remote. Sens.
Pathan Imran Khan, Devanaboyina Venkata Ratnam, Perumal Prasad, Shaik Darga Saheb, Jonathan H. Jiang, Ghouse Basha, Kishore Pangaluru, Chanabasanagouda S. Patil
2023 J jnl
An Extreme Value Analysis of Long-Term GNSS Ionospheric Total Electron Content Data Observed at Japan Grid Point Location (34.95° N and 134.05° E).
IEEE Geosci. Remote. Sens. Lett.
Suneetha Emmela, Devanaboyina Venkata Ratnam, Yuichi Otsuka, Atsuki Shinbori, Takuya Sori, Michi Nishioka, Septi Perwitasari
2023 J jnl
Ant-Colony Optimization Based Energy Aware Cross Layer Routing Protocol to Improve Route Reliability in MANETs.
Wirel. Pers. Commun.
Shafi Shaik, Devanaboyina Venkata Ratnam
2023 J jnl
Machine learning based object-level crop classification of PlanetScope data at South India Basin.
Earth Sci. Informatics
D. Bhavana, N. Likhita, G. V. Madhumitha, Devanaboyina Venkata Ratnam
2023 J jnl
New Energy Aware MPR Selection for Securing OLSR Routing Scheme Under Black Hole Attack: A Machine Learning Approach.
Wirel. Pers. Commun.
Shafi Shaik, Devanaboyina Venkata Ratnam
2022 J jnl
A Bidirectional Deep-Learning Algorithm to Forecast Regional Ionospheric TEC Maps.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Kondaveeti Sivakrishna, Devanaboyina Venkata Ratnam, Gampala Sivavaraprasad
2022 J jnl
A Bidirectional Long Short-Term Memory-Based Ionospheric foF2 and hmF2 Models for a Single Station in the Low Latitude Region.
IEEE Geosci. Remote. Sens. Lett.
T. Venkateswara Rao, Miriyala Sridhar, Devanaboyina Venkata Ratnam, P. Babu Sree Harsha, I. Srivani
2022 J jnl
A trust based energy and mobility aware routing protocol to improve infotainment services in VANETs.
Peer-to-Peer Netw. Appl.
Shafi Shaik, Devanaboyina Venkata Ratnam
2022 J jnl
An Automatic CADI's Ionogram Scaling Software Tool for Large Ionograms Data Analytics.
IEEE Access
T. Venkateswara Rao, Miriyala Sridhar, Devanaboyina Venkata Ratnam
2022 J jnl
An Efficient Cross Layer Design of Stability Based Clustering Scheme Using Ant Colony Optimization in VANETs.
Wirel. Pers. Commun.
Shafi Shaik, Devanaboyina Venkata Ratnam
2022 J jnl
Automatic Detection of GNSS Ionospheric Scintillation Based on Extreme Gradient Boosting Technique.
IEEE Geosci. Remote. Sens. Lett.
Abhijit Dey, Manhal Rahman, Devanaboyina Venkata Ratnam, Nitin Sharma
2022 J jnl
Double difference method with zero and short base length carrier phase measurements for Navigation with Indian Constellation satellites L5 (1176.45 MHz) signal quality analysis.
Int. J. Satell. Commun. Netw.
Swamy KCT, Devanaboyina Venkata Ratnam, Towseef Ahmed Shaik
2022 J jnl
Signatures of Equatorial Plasma Bubbles and Ionospheric Scintillations from Magnetometer and GNSS Observations in the Indian Longitudes during the Space Weather Events of Early September 2017.
Remote. Sens.
Ram Kumar Vankadara, Sampad Kumar Panda, Christine Amory-Mazaudier, Rolland Fleury, Devanaboyina Venkata Ratnam, Tarun Kumar Pant, Punyawi Jamjareegulgarn, Mohd Anul Haq, Daniel I. Okoh, Gopi Krishna Seemala
2021 J jnl
Implementation of Hybrid Deep Learning Model (LSTM-CNN) for Ionospheric TEC Forecasting Using GPS Data.
IEEE Geosci. Remote. Sens. Lett.
Adarsha Ruwali, A. J. Sravan Kumar, Kolla Bhanu Prakash, Gampala Sivavaraprasad, Devanaboyina Venkata Ratnam
2021 J jnl
Performance Analysis of Machine Learning Algorithms for Smartphone-Based Human Activity Recognition.
Wirel. Pers. Commun.
N. C. Sri Harsha, Y. Girish Venkata Sai Anudeep, Kudarvalli Vikash, Devanaboyina Venkata Ratnam
2020 J jnl
A New Ionospheric Model for Single Frequency GNSS User Applications Using Klobuchar Model Driven by Auto Regressive Moving Average (SAKARMA) Method Over Indian Region.
IEEE Access
I. Lakshmi Mallika, Devanaboyina Venkata Ratnam, Saravana Raman, Gampala Sivavaraprasad
2020 J jnl
Generation of Regional Ionospheric TEC Maps With EIA Nowcasting/Forecasting Capability During Geomagnetic Storm Conditions.
IEEE Access
P. Babu Sree Harsha, Devanaboyina Venkata Ratnam
2020 J jnl
Performance Evaluation of Adjusted Spherical Harmonics Ionospheric Model Over Indian Region.
IEEE Access
Kondaveeti Sivakrishna, Devanaboyina Venkata Ratnam, Miriyala Sridhar, P. Babu Sree Harsha, Gampala Sivavaraprasad
2020 — conf
Regional ionospheric TEC data assimilation and forecasting during geomagnetic storm conditions for 17
WiSEE
Babu Sree Harsha Pasumarthi, Devanaboyina Venkata Ratnam, P. R. Sinha, Devendra K. Ojha, B. Suneel Kumar
2019 J jnl
A Cross Layer Cluster Based Routing Approach for Efficient Multimedia Data Dissemination with Improved Reliability in VANETs.
Wirel. Pers. Commun.
Shafi Shaik, Devanaboyina Venkata Ratnam
2019 J jnl
A Deep Learning-Based Approach to Forecast Ionospheric Delays for GPS Signals.
IEEE Geosci. Remote. Sens. Lett.
I. Srivani, Gampala Siva Vara Prasad, Devanaboyina Venkata Ratnam
2019 J jnl
Implementation of Hybrid Ionospheric TEC Forecasting Algorithm Using PCA-NN Method.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
I. Lakshmi Mallika, Devanaboyina Venkata Ratnam, Yuichi Otsuka, Gampala Sivavaraprasad, Saravana Raman
2019 J jnl
Modelling of FPGA-Particle Swarm Optimized GNSS Receiver for Satellite Applications.
Wirel. Pers. Commun.
Nuli Namassivaya, Surendra Pal, Devanaboyina Venkata Ratnam
2018 J jnl
An Efficient Cross Layer Routing Protocol for Safety Message Dissemination in VANETS with Reduced Routing Cost and Delay Using IEEE 802.11p.
Wirel. Pers. Commun.
Shafi Shaik, Devanaboyina Venkata Ratnam, B. N. Bhandari
2018 J jnl
Improvement of Indian-Regional Klobuchar Ionospheric Model Parameters for Single-Frequency GNSS Users.
IEEE Geosci. Remote. Sens. Lett.
Devanaboyina Venkata Ratnam, J. R. K. Kumar Dabbakuti, N. V. V. N. J. Sri Lakshmi
2018 J jnl
Ionospheric Gradients Estimation and Analysis of S-Band Navigation Signals for NAVIC System.
IEEE Access
Devanaboyina Venkata Ratnam, T. Raghavendra Vishnu, P. Babu Sree Harsha
2017 J jnl
Maximum-Minimum Eigen Detector for Ionospheric Irregularities Over Low-Latitude Region.
IEEE Geosci. Remote. Sens. Lett.
Swapna Raghunath, Devanaboyina Venkata Ratnam
2017 J jnl
Mitigation of Ionospheric Scintillation Effects on GNSS Signals Using Variational Mode Decomposition.
IEEE Geosci. Remote. Sens. Lett.
Gampala Sivavaraprasad, R. Sree Padmaja, Devanaboyina Venkata Ratnam
2017 J jnl
Modeling of Ionospheric Time Delays Based on a Multishell Spherical Harmonics Function Approach.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Devanaboyina Venkata Ratnam, J. R. K. Kumar Dabbakuti, Surendra Sunda
2017 J jnl
Pathloss Study for 61 GHZ Wave D2D Communications in Indoor Environment.
Wirel. Pers. Commun.
Sreevardhan Cheerla, Devanaboyina Venkata Ratnam, S. Ratna Meghana, V. M. S. Vishnu Varma, S. K. Altaf Hussain, K. Jaya Sai Sravanth
2016 J jnl
Implementation of Advanced Carrier Tracking Algorithm Using Adaptive-Extended Kalman Filter for GNSS Receivers.
IEEE Geosci. Remote. Sens. Lett.
P. Babu Sree Harsha, Devanaboyina Venkata Ratnam
2016 J jnl
Ionospheric Spatial Gradient Detector Based on GLRT Using GNSS Observations.
IEEE Geosci. Remote. Sens. Lett.
Swapna Raghunath, Devanaboyina Venkata Ratnam
2016 J jnl
Mitigation of ionospheric scintillations for GPS signals under geomagnetic storm conditions using LMS adaptive filter.
Int. J. Inf. Commun. Technol.
Miriyala Sridhar, K. Padma Raju, Ch. Srinivasa Rao, Devanaboyina Venkata Ratnam
2015 J jnl
Detection of Low-Latitude Ionospheric Irregularities From GNSS Observations.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Swapna Raghunath, Devanaboyina Venkata Ratnam
2012 J jnl
Modeling of Low-Latitude Ionosphere Using GPS Data With SHF Model.
IEEE Trans. Geosci. Remote. Sens.
Devanaboyina Venkata Ratnam, A. D. Sarma